Use these docs to help you to upgrade your environment in support of the recent addition of the latest generation AWS instance types such as M3s and C3s.

• Upgrade Guide
• Instance and Stack EOL
• Use R3 Instances
• Use T2 Instances
• Use C4 Instances
• Use M4 Instances
• About Amazon VPC on Engine Yard
• How to Use the Upgrade Information Tool
• Upgrade a Single Server (Solo) Environment
• Upgrade a Multiple Server Environment
• Simple Upgrade from Engine Yard Gentoo 2009 (stable-v2) to 12.11 (stable-v4)